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CHANGE IN OPERATING WORKING CAPITAL (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
CHANGE IN OPERATING WORKING CAPITAL    
Change in accounts receivable and other $ 4 $ 5
Change in accounts payable and accrued liabilities 4 10
Change in accounts payable to affiliates (7) 13
Change in accrued interest 8 8
Change in operating working capital $ 9 $ 36